Tourmaline, working as the energy source, is attached to elastic fibers of this Fivfivgo Energy-Stone Microcurrent Lifting Bra and can produce heat without electricity and other energy sources. It can generate microcurrent to stimulate the growth and lift of your breasts. It does this by stimulating collagen production, which helps improve the fullness and firmness of your breasts. The best part is that it accomplishes that without invasive or surgical procedures. With continuous use, you'll be able to have the bust you've always dreamed of! How do Fivfivgo Energy-Stone Microcurrent Lifting Bra Works? It also can increase the ability of existing cells to store lipids, speed up the production of new cells, stimulate the synthesis of female hormones, invigorate your breasts in a short time and give them a nice and visible lift, making them look fuller. It is more effective than traditional method. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.